What's this
Netherlink is a web application for planning setup of Nether portals in Minecraft. It lets you record a set of portals in your world, and simulates connections between them. The app tells you what will happen if you create a portal at a certain place.
The application is hosted here: https://depressed-pho.github.io/netherlink/
Any changes you make are automatically saved in your browser, and only your browser. If you want to share your data between browsers, you need to export your world data to a file, and import it in another browser.
If your browser supports progressive web apps, you can also install Netherlink to your device and use it as if it were a regular application, even without a network connection.
License
CC0 “No Rights Reserved”